Go to line 55 and you will find the problem. I'd rather not follow a link to see your code. Please type [ code] at the beginning and [/code] at the end. Paste your code in between and dont put any spaces in the tags.

Try putting the my calc code in one file, the main doesn't need to be in the same file, but for most programs I use it in the same class. For the most part, however; I don't see any problems. What happens if you manually compile in cmd? One thing that's unrelated is you can use a switch case instead of all the if else clauses.

Try putting the my calc code in one file, the main doesn't need to be in the same file, but for most programs I use it in the same class. For the most part, however; I don't see any problems. What happens if you manually compile in cmd? One thing that's unrelated is you can use a switch case instead of all the if else clauses.

Only problem I can think of is that Eclipse isn't automatically adding the import java.utils... etc